If the company does not carry out inspection when the two materials are mixed, random addition will directly affect the tensile load performance of the plastic woven bag. Strict control of the amount of recycled materials is also critical. If the amount is too large, the relative breaking force of the flat wire will be greatly reduced. The increased brittleness of the produced plastic woven bag makes the tensile load of the plastic woven bag decrease.
3 key factors affecting the quality of plastic woven bags
As for the product of plastic woven bag, the excellent quality will directly determine its use performance and use effect, so it is imperative to improve the application efficiency of plastic woven bag and improve product quality. Based on the investigation and research results of woven bag manufacturers in recent years, the factors that cause the quality of plastic woven bags to be unqualified are mainly the formula, the mass per unit area, the elongation at break of flat yarn, etc. The following plastic woven bag manufacturers are the above factors. The specific impact of woven bag quality parameters on Chengdu plastic woven bags.
In the production of non-food plastic woven bags, companies generally use recycled materials and new materials to produce flat woven plastic bags. If the amount of recycled materials is appropriately added, it can reduce production costs and protect the environment. The proportion should be adjusted according to the melt index of the two materials, and the raw materials with similar melt indexes should be used. If the company does not carry out inspection when the two materials are mixed, random addition will directly affect the tensile load performance of the plastic woven bag. Strict control of the amount of recycled materials is also critical. If the amount is too large, the relative breaking force of the flat wire will be greatly reduced. The increased brittleness of the produced plastic woven bag makes the tensile load of the plastic woven bag decrease.
?? Unit area mass
The mass per unit area is an important technical index of plastic woven bags, and it is closely related to the density of warp and weft, and the selected flat yarn. In the case that the flat yarn meets the requirements, too low mass per unit area will affect the tensile load and the load capacity will decrease after bagging; too high will increase the cost of bag making, which is uneconomical. Generally, the requirements for flat yarns can be relaxed under the premise that the warp quality can be met. The warp yarns that affect the unit area quality of the warp yarns are composed of many flat yarns. The thickness deviations of many warp yarns are averaged. Its influence on the mass per unit area tends to a set value, which eliminates the influence of the thickness deviation of a single wire, and the weft yarn is usually determined by one wire in ordinary loom, and the deviation of this wire determines the plastic All weft deviations of the woven bag in the area composed of this weft. For this reason, the selection of weft is more stringent. Some factories choose weft according to the unit area quality, which can usually control the unit area quality of Chengdu plastic weaving. bag.
??? Flat wire elongation at break
The elongation at break of the flat wire has a greater impact on the normal production of the plastic woven bag process. The elongation at break is low, and the flat wire feels brittle and hard. When the elongation is less than 15%, the impact strength of the flat wire is significantly reduced, and it is easy to cause broken ends. At 30%, the relative tensile load of the flat yarn decreases, which can not meet the requirements of the production process, and the flat yarn is also easy to fold during production, which tends to cause the density to become loose. The woven bag is easy to deform, and the load capacity of the bag body will not meet the requirements of Chengdu plastic woven bag.